"Tuning frictional behavior on the fly has been a long-standing engineering dream," said co-author Katia Bertoldi of Harvard University. "This new insight into how surface geometry governs slip pulses paves the way for tunable frictional metamaterials that can transition from low-friction to high-grip states on demand.” In addition, the dynamics revealed by these results are similar to those of tectonic faults and thus give scientists a new model for the mechanics of earthquakes, according to their new paper published in the journal Nature.
Цены на нефть взлетели до максимума за полгода17:55，这一点在Line官方版本下载中也有详细论述
。关于这个话题，heLLoword翻译官方下载提供了深入分析
For Jim Lovell, this was more than a childish lark.
“I think most companies are late. Within the next year, I believe the majority of companies will reach the same conclusion and make similar structural changes,” he wrote in a separate letter to shareholders.，更多细节参见旺商聊官方下载